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245 lines
8.5 KiB
C
245 lines
8.5 KiB
C
/* GStreamer
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* Copyright (C) 2010 Marc-Andre Lureau <marcandre.lureau@gmail.com>
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* Copyright (C) 2010 Andoni Morales Alastruey <ylatuya@gmail.com>
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* Copyright (C) 2015 Tim-Philipp Müller <tim@centricular.com>
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*
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* m3u8.h:
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Library General Public
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* License as published by the Free Software Foundation; either
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* version 2 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Library General Public License for more details.
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*
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* You should have received a copy of the GNU Library General Public
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* License along with this library; if not, write to the
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* Free Software Foundation, Inc., 51 Franklin St, Fifth Floor,
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* Boston, MA 02110-1301, USA.
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*/
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#ifndef __M3U8_H__
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#define __M3U8_H__
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#include <gst/gst.h>
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G_BEGIN_DECLS
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typedef struct _GstM3U8 GstM3U8;
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typedef struct _GstM3U8MediaFile GstM3U8MediaFile;
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typedef struct _GstM3U8InitFile GstM3U8InitFile;
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typedef struct _GstHLSMedia GstHLSMedia;
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typedef struct _GstM3U8Client GstM3U8Client;
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typedef struct _GstHLSVariantStream GstHLSVariantStream;
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typedef struct _GstHLSMasterPlaylist GstHLSMasterPlaylist;
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#define GST_M3U8(m) ((GstM3U8*)m)
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#define GST_M3U8_MEDIA_FILE(f) ((GstM3U8MediaFile*)f)
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#define GST_M3U8_LOCK(m) g_mutex_lock (&m->lock);
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#define GST_M3U8_UNLOCK(m) g_mutex_unlock (&m->lock);
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#define GST_M3U8_IS_LIVE(m) ((m)->endlist == FALSE)
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/* hlsdemux must not get closer to the end of a live stream than
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GST_M3U8_LIVE_MIN_FRAGMENT_DISTANCE fragments. Section 6.3.3
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"Playing the Playlist file" of the HLS draft states that this
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value is three fragments */
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#define GST_M3U8_LIVE_MIN_FRAGMENT_DISTANCE 3
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struct _GstM3U8
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{
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gchar *uri; /* actually downloaded URI */
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gchar *base_uri; /* URI to use as base for resolving relative URIs.
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* This will be different to uri in case of redirects */
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gchar *name; /* This will be the "name" of the playlist, the original
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* relative/absolute uri in a variant playlist */
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/* parsed info */
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gboolean endlist; /* if ENDLIST has been reached */
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gint version; /* last EXT-X-VERSION */
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GstClockTime targetduration; /* last EXT-X-TARGETDURATION */
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gboolean allowcache; /* last EXT-X-ALLOWCACHE */
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GList *files;
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/* state */
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GList *current_file;
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GstClockTime current_file_duration; /* Duration of current fragment */
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gint64 sequence; /* the next sequence for this client */
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GstClockTime sequence_position; /* position of this sequence */
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gint64 highest_sequence_number; /* largest seen sequence number */
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GstClockTime first_file_start; /* timecode of the start of the first fragment in the current media playlist */
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GstClockTime last_file_end; /* timecode of the end of the last fragment in the current media playlist */
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GstClockTime duration; /* cached total duration */
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gint discont_sequence; /* currently expected EXT-X-DISCONTINUITY-SEQUENCE */
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/*< private > */
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gchar *last_data;
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GMutex lock;
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gint ref_count; /* ATOMIC */
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};
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GstM3U8 * gst_m3u8_ref (GstM3U8 * m3u8);
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void gst_m3u8_unref (GstM3U8 * m3u8);
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struct _GstM3U8MediaFile
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{
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gchar *title;
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GstClockTime duration;
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gchar *uri;
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gint64 sequence; /* the sequence nb of this file */
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gboolean discont; /* this file marks a discontinuity */
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gchar *key;
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guint8 iv[16];
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gint64 offset, size;
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gint ref_count; /* ATOMIC */
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GstM3U8InitFile *init_file; /* Media Initialization (hold ref) */
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};
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struct _GstM3U8InitFile
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{
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gchar *uri;
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gint64 offset, size;
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guint ref_count; /* ATOMIC */
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};
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GstM3U8MediaFile * gst_m3u8_media_file_ref (GstM3U8MediaFile * mfile);
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void gst_m3u8_media_file_unref (GstM3U8MediaFile * mfile);
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GstM3U8 * gst_m3u8_new (void);
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gboolean gst_m3u8_update (GstM3U8 * m3u8,
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gchar * data);
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void gst_m3u8_set_uri (GstM3U8 * m3u8,
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const gchar * uri,
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const gchar * base_uri,
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const gchar * name);
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GstM3U8MediaFile * gst_m3u8_get_next_fragment (GstM3U8 * m3u8,
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gboolean forward,
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GstClockTime * sequence_position,
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gboolean * discont);
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gboolean gst_m3u8_has_next_fragment (GstM3U8 * m3u8,
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gboolean forward);
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void gst_m3u8_advance_fragment (GstM3U8 * m3u8,
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gboolean forward);
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GstClockTime gst_m3u8_get_duration (GstM3U8 * m3u8);
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GstClockTime gst_m3u8_get_target_duration (GstM3U8 * m3u8);
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gchar * gst_m3u8_get_uri (GstM3U8 * m3u8);
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gboolean gst_m3u8_is_live (GstM3U8 * m3u8);
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gboolean gst_m3u8_get_seek_range (GstM3U8 * m3u8,
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gint64 * start,
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gint64 * stop);
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typedef enum
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{
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GST_HLS_MEDIA_TYPE_INVALID = -1,
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GST_HLS_MEDIA_TYPE_AUDIO,
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GST_HLS_MEDIA_TYPE_VIDEO,
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GST_HLS_MEDIA_TYPE_SUBTITLES,
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GST_HLS_MEDIA_TYPE_CLOSED_CAPTIONS,
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GST_HLS_N_MEDIA_TYPES
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} GstHLSMediaType;
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struct _GstHLSMedia {
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GstHLSMediaType mtype;
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gchar *group_id;
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gchar *name;
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gchar *lang;
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gchar *uri;
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gboolean is_default;
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gboolean autoselect;
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gboolean forced;
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GstM3U8 *playlist; /* media playlist */
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gint ref_count; /* ATOMIC */
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};
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GstHLSMedia * gst_hls_media_ref (GstHLSMedia * media);
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void gst_hls_media_unref (GstHLSMedia * media);
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const gchar * gst_hls_media_type_get_name (GstHLSMediaType mtype);
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struct _GstHLSVariantStream {
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gchar *name; /* This will be the "name" of the playlist, the original
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* relative/absolute uri in a variant playlist */
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gchar *uri;
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gchar *codecs;
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gint bandwidth;
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gint program_id;
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gint width;
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gint height;
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gboolean iframe;
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gint refcount; /* ATOMIC */
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GstM3U8 *m3u8; /* media playlist */
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/* alternative renditions */
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gchar *media_groups[GST_HLS_N_MEDIA_TYPES];
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GList *media[GST_HLS_N_MEDIA_TYPES];
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};
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GstHLSVariantStream * gst_hls_variant_stream_ref (GstHLSVariantStream * stream);
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void gst_hls_variant_stream_unref (GstHLSVariantStream * stream);
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gboolean gst_hls_variant_stream_is_live (GstHLSVariantStream * stream);
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GstHLSMedia * gst_hls_variant_find_matching_media (GstHLSVariantStream * stream,
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GstHLSMedia *media);
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struct _GstHLSMasterPlaylist
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{
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/* Available variant streams, sorted by bitrate (low -> high) */
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GList *variants;
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GList *iframe_variants;
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GstHLSVariantStream *default_variant; /* first in the list */
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gint version; /* EXT-X-VERSION */
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gint refcount; /* ATOMIC */
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gboolean is_simple; /* TRUE if simple main media playlist,
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* FALSE if variant playlist (either
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* way the variants list will be set) */
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/*< private > */
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gchar *last_data;
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};
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GstHLSMasterPlaylist * gst_hls_master_playlist_new_from_data (gchar * data,
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const gchar * base_uri);
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GstHLSVariantStream * gst_hls_master_playlist_get_variant_for_bitrate (GstHLSMasterPlaylist * playlist,
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GstHLSVariantStream * current_variant,
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guint bitrate);
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GstHLSVariantStream * gst_hls_master_playlist_get_matching_variant (GstHLSMasterPlaylist * playlist,
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GstHLSVariantStream * current_variant);
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void gst_hls_master_playlist_unref (GstHLSMasterPlaylist * playlist);
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G_END_DECLS
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#endif /* __M3U8_H__ */
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